Here's what rhymes with showing.
                        
                        
                    
                                owing  sewing  sowing  hoeing  shoeing  going  knowing  flowing  throwing  bowing  rowing  slowing  towing  lowing  snowing  stowing  toeing  growing  blowing  glowing  crowing  meowing  foregoing  bestowing  easygoing  unknowing  forgoing  ingrowing  foreknowing  kowtowing  snowshoeing  overflowing  overthrowing  oceangoing  undergoing  Words that almost rhyme with showing
voting  hoping  owning  soaking  zoning  foaming  homing  honing  phoning  holing  shoaling  hosing  soaping  foaling  oping  holding  floating  loading  rolling  smoking  coating  coding  coping  noting  folding  sloping  choking  coaching  joking  polling  posing  boating  bowling  combing  dosing  evoking  hosting  loathing  moaning  poking  roaming  roving  coking  dozing  poaching  tolling  doting  goading  loafing  loaning  nosing  roping  stoning  toning  toting  boding  doling  moping  ogling  poling  scoping  stoking  yoking  boning  doming  hoaxing  joshing  closing  clothing  opposing  quoting  supposing  boasting  cloning  devoting  groping  invoking  molding  moulding  posting  probing  coasting  groaning  growling  roasting  scolding  stroking  strolling  atoning  bolting  coaxing  croaking  eroding  jolting  bloating  droning  gloating  moulting  revoking  scrolling  toasting  trolling  broaching  cloaking  disowning  gloaming  molting  rezoning  ghosting  grossing  offloading  apposing  emoting  paroling  approaching  imposing  encoding  exposing  unfolding  denoting  disposing  provoking  revolting  unloading  upholding  beholding  consoling  decoding  foreboding  ennobling  enrolling  extolling  overloading  reposing  bemoaning  bowstring  buttoning  cajoling  deposing  reloading  unrolling  connoting  enfolding  intoning  nonvoting  purposing  unloving  convoking  disrobing  infolding  overdosing  refolding  blazoning  chaperoning  demoting  promoting  composing  proposing  enclosing  withholding  disclosing  encroaching  exploding  patrolling  postponing  engrossing  inclosing  reproaching  condoning  telephoning  foreclosing  logrolling  nonsmoking  wainscoting  condoling  imploding  proroguing  remolding  remoulding  superposing  cuckolding  honeycombing  misquoting  overgrowing  controlling  diagnosing  interposing  presupposing  telescoping  transposing  unbuttoning  buttonholing  pawnbroking  pigeonholing  unimposing  decomposing  predisposing  juxtaposing  superimposing  underclothing  recomposing